- var_dump: documentation ( source)
- str_repeat: documentation ( source)
- preg_match: documentation ( source)
- ini_get: documentation ( source)
<?php
var_dump(ini_get("pcre.backtrack_limit"));
$a = "aa" . str_repeat("a", 2000000) . "TEST";
echo strlen($a);
var_dump(preg_match('/TEST/', $a));